<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #i1{color: green}
        .c1{color:blue}
        h1,h2{background-color: yellow}
        input[type="password"]{background-color: red}
        *{border: 1px solid red}
    </style>
</head>
<body>
<ul>
    <li id="i1">张学友</li>
    <li class="c1">刘德华</li>
    <li>郭富城</li>
    <li>黎明</li>
</ul>
<h1 class="c1">悟空</h1><h1>悟能</h1><h1>悟净</h1>
<h2>鲁班</h2>
<input type="text">
<input type="password">
</body>
</html>